Year

1866

2 sourced events from this year.

Events

1866 Timeline

All Years

Other19th CenturyNorth America

American Society for Prevention of Cruelty to Animals Founded

In mid-19th century America, widespread animal mistreatment in urban streets, work animals, and entertainment went largely unaddressed amid rapid industrialization and population growth in cities like New York. Henry Bergh, a wealthy diplomat influenced by European animal protection efforts, returned to the United States determined to advocate for humane treatment. On April 10, 1866, he established the American Society for the Prevention of Cruelty to Animals in New York City, securing its charter from the state legislature shortly after. The organization focused initially on enforcing existing anti-cruelty laws and raising public awareness through investigations and prosecutions. Bergh personally patrolled streets to intervene in cases of abuse.

Military19th CenturyNorth America

Fetterman Fight Claims 81 U.S. Soldiers

During Red Cloud's War, tensions escalated between U.S. forces building forts along the Bozeman Trail and Lakota, Cheyenne, and Arapaho tribes defending their hunting grounds in Wyoming Territory. On December 21, 1866, a relief party led by Captain William J. Fetterman pursued decoy warriors into an ambush near Fort Phil Kearny. Approximately 2,000 Native warriors overwhelmed the 81 soldiers in a swift and decisive engagement. No U.S. troops survived the battle, marking the worst Army defeat on the Plains until Little Bighorn. The incident prompted reevaluation of military tactics against Native coalitions.